package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Employee;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishMapper dishMapper;

    /**
     * 新增套餐，同时需要保存套餐和菜品的关联关系
     * @param setmealDTO
     */
    @Transactional
    public void saveWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);

        //向套餐表插入数据
        setmealMapper.insert(setmeal);

        //获取生成的套餐id
        Long setmealId = setmeal.getId();

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealId);
        });

        //保存套餐和菜品的关联关系
        setmealDishMapper.insertBatch(setmealDishes);
    }

    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        //
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
       Page<Setmeal> page = setmealMapper.pageQuery(setmealPageQueryDTO);
       long total = page.getTotal();
       List<Setmeal> records = page.getResult();
       return new PageResult(total,records);
     }

    @Override
    public void deleteBatch(List<Long> ids) {
        ids.forEach(id->{
            Setmeal setmeal = setmealMapper.getById(id);
            if(StatusConstant.ENABLE == setmeal.getStatus()){
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        });
        ids.forEach(setmealId ->{
                setmealMapper.deleteById(setmealId);
                setmealDishMapper.deleteBySetmealId(setmealId);
    });
}
    /**
     * 根据id查询套餐和套餐菜品关系
     *
     * @param id
     * @return
     */

    @Override
    public SetmealVO getByIdWithDish(Long id) {
       Setmeal setmeal = setmealMapper.getById(id);
       List<SetmealDish> setmealDishes = setmealDishMapper.getBysetmealId(id);
       SetmealVO setmealVO =new SetmealVO();
       BeanUtils.copyProperties(setmeal,setmealVO);
       setmealVO.setSetmealDishes(setmealDishes);
       return setmealVO;
    }

    /**
     * 修改套餐
     *
     * @param setmealDTO
     */
    @Transactional
    @Override
    public void update(SetmealDTO setmealDTO) {

        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);

        //1、修改套餐表，执行update
        setmealMapper.update(setmeal);

        //套餐id
        Long setmealId = setmealDTO.getId();

        //2、删除套餐和菜品的关联关系，操作setmeal_dish表，执行delete
        setmealDishMapper.deleteBySetmealId(setmealId);

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealId);
        });
        //3、重新插入套餐和菜品的关联关系，操作setmeal_dish表，执行insert
        System.out.println(setmealDishes);
        setmealDishMapper.insertBatch(setmealDishes);

    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}

/*@Service
public class SetmealServicelmpl implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;


   *//**
     * 新增套餐
     * @param setmealDTO
     *//*

    *//*@Override
    @Transactional
    public void save(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmeal.setStatus(StatusConstant.DISABLE);
        setmealMapper.save(setmeal);
        long id =  setmeal.getId();
        List<SetmealDish> setmealDishes =  setmealDTO.getSetmealDishes();
       *//**//* for (SetmealDish setmealDish : setmealDishes) {
            setmealDish.setSetmealId(id);
        }*//**//*
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(id);
        });
       setmealDishMapper.insertBatch(setmealDishes);

    }*//*

    @Override
    @Transactional
    public void saveWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);

            //向套餐表插入数据
            setmealMapper.insert(setmeal);

            //获取生成的套餐id
            Long setmealId = setmeal.getId();

            List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealId);
            });

            //保存套餐和菜品的关联关系
            setmealDishMapper.insertBatch(setmealDishes);

    }
}*/
